RKE salinity probe calibration

TankCla · 09/04/2013, 01:13 PM

I just got the SL2v2 module from DA and I experience a situation.
My refractometer is showing a difference of 10ppm between DigitalAquatic calibration solution and Aqua Craft calibrating solution.

Did you encounter a similar issue?
Should I buy a third calibrating solution?
DA solution is not accurate?
Aqua Craft is not accurate?

Thanks
Claud

rburns24 · 09/04/2013, 08:43 PM

I'd personally use the 35ppt Pinpoint Calibration Solution(American Marine Inc) and ditch the other two ASAP.

DaveMorris · 09/07/2013, 12:10 AM

There will be a difference between solutions. The calibration solution that DA sends out, along with several other solutions out there, are not formulated to be read with a refractometer. There is a difference.

That being said, any solution that is marked with what it is will work for calibrating the probe.

TankCla · 09/09/2013, 06:27 AM

Quote:

Originally Posted by DaveMorris

There will be a difference between solutions. The calibration solution that DA sends out, along with several other solutions out there, are not formulated to be read with a refractometer. There is a difference.

That being said, any solution that is marked with what it is will work for calibrating the probe.

This makes sense. Thank you Dave! The most reasonable answer I got for this issue.
I am wandering why DA doesn't tell this when you buy the probe. They let you

for a while.

DaveMorris · 09/10/2013, 12:22 AM

Quote:

Originally Posted by TankCla

This makes sense. Thank you Dave! The most reasonable answer I got for this issue.
I am wandering why DA doesn't tell this when you buy the probe. They let you

for a while.

A lot of us have been wondering very similar things!

09/04/2013, 01:13 PM	#1
TankCla SPSychology Join Date: Mar 2012 Location: Golden Horseshoe Posts: 169	RKE salinity probe calibration I just got the SL2v2 module from DA and I experience a situation. My refractometer is showing a difference of 10ppm between DigitalAquatic calibration solution and Aqua Craft calibrating solution. Did you encounter a similar issue? Should I buy a third calibrating solution? DA solution is not accurate? Aqua Craft is not accurate? Thanks Claud __________________ Thanks! Claus Current Tank Info: 75 gal mixed reef, 29 gallon sump, 6x54W(Giesemann) T5HO, Tunze 9410, 2xJebao RW15, Tunze Silence, DIY ato, RKE Titanium

09/07/2013, 12:10 AM	#3
DaveMorris VP, SDMAS Join Date: Nov 2006 Location: Sunny San Diego, CA Posts: 1,309	There will be a difference between solutions. The calibration solution that DA sends out, along with several other solutions out there, are not formulated to be read with a refractometer. There is a difference. That being said, any solution that is marked with what it is will work for calibrating the probe. __________________ Dave My 130g tank: http://www.reefcentral.com/forums/showthread.php?t=2387989 Current Tank Info: 130g build in progress

09/04/2013, 08:43 PM	#2
rburns24 Registered Member Join Date: Dec 2010 Location: Toronto Posts: 176	I'd personally use the 35ppt Pinpoint Calibration Solution(American Marine Inc) and ditch the other two ASAP.